两种修正的自适应通道均衡方法

Two Methods of Modified Adaptive Channel Equalization

在常规雷达加装的自适应旁瓣相消(ASLC)系统中,天线至接收机前端馈线部分的相位不一致性通常不可忽略。而现有的自适应通道均衡方法是在接收机前端注入校准信号进行均衡,只能对接收机的幅相不一致性进行校正,对馈线部分的相位失配却无能为力,因此影响了ASLC的对消性能。该文提出了两种修正的自适应通道均衡方法,它们能同时校正接收机与馈线部分的幅相不一致性。理论分析和实验结果验证了这两种方法的有效性。

In the Adaptive Side Lobe Cancellation（ASLC） system of general radar, the mismatched phase of transmission line between the antenna and the former of the receiver can not be ignored usually. Otherwise, the existing method of adaptive channel equalization can only equalize the mismatched amplitude and phase of the receiver while it is disabled of the mismatched phase of the transmission line, because the reference signal is inputted in front of the receiver. Therefore the performance of ASLC is affected. Two methods of modified adaptive channel equalization are provided in this article. The mismatched amplitude and phase of the receiver and the transmission line can be revised at the same time by these two methods. The effect of them is proved with the theory analysis and experimental results.